Photocatalytic activity of TiO2 nanomaterials
2
조회
0
다운로드
8
인용
0
참고문헌
키워드
초록
To investigate the effect of calcination temperature on crystal structure, phase, and photocatalytic activity of methylene blue(MB), TiO2 nanofibers were prepared through sol-gel derived electrospinning, calcination from 500 oC to 650 oC, andsubsequent mechanical grinding. XRD results indicated that TiO2 nanofibers calcined at 500 oC is composed of anatase TiO2 only. However, mixed crystals of anatase and rutile were observed for TiO2 calcined above 550 oC. Higher MB degradationwas observed for the TiO2 nanofibers calcined at 550 oC most likely due to the mixed crystals and large surface area. Enhanced photocatalytic activity was achieved for TiO2 and Nb-TiO2 nanotubes due to the synergic combinations of mixed crystals and larger specific surface area.
Abstract
To investigate the effect of calcination temperature on crystal structure, phase, and photocatalytic activity of methylene blue(MB), TiO2 nanofibers were prepared through sol-gel derived electrospinning, calcination from 500 oC to 650 oC, andsubsequent mechanical grinding. XRD results indicated that TiO2 nanofibers calcined at 500 oC is composed of anatase TiO2 only. However, mixed crystals of anatase and rutile were observed for TiO2 calcined above 550 oC. Higher MB degradationwas observed for the TiO2 nanofibers calcined at 550 oC most likely due to the mixed crystals and large surface area. Enhanced photocatalytic activity was achieved for TiO2 and Nb-TiO2 nanotubes due to the synergic combinations of mixed crystals and larger specific surface area.
참고문헌 (17)
- D. Y. Lee, , J. Nanosci. Nanotechnol, 12, pp.1599~1603 (2012)
- D. Y. Lee, , Physica Status Solidi C, 9, pp.1423~1426 (2012)
- 이득용, "Preparation and photocatalytic degradation of erbium doped titanium dioxide nanorods", Current Applied Physics, 12(4), pp.1229~1233 (2012), 한국물리학회[DOI]
- 이득용, "Effect of Nb doping on morphology, crystal structure, optical band gap energy of TiO2 thin films", Current Applied Physics, 14(3), pp.421~427 (2014), 한국물리학회
- Y. Song, , J. Nanosci. Nanotechnol, 15, pp.5228~5231 (2015)
- X. Z. Li, , J. Photochem. Photobio. A : Chem, 141, pp.209~217 (2001)
- 이득용, "Titania Nanofibers Prepared by Electrospinning", Journal of the Korean Physical Society, 48(6), pp.1686~1690 (2006), 한국물리학회
- K. Fujihara, , Nanotechnol, 18, pp.365709~ (2008)
- J. Shi, , J. Hazard. Mater, 161, pp.416~422 (2009)
- C. Liang, , J. Hazard. Mater, 138, pp.471~478 (2006)
- D. Y. Lee, , J. Nanosci. Nanotechnol, 16, pp.5341~5344 (2016)
- D.Y. Lee, "Proceedings of SPIE 9798, Electroactive Polymer Actuators and Devices (EAPAD) 2016", pp.97982~ (2016)
- K. M. Parida, , J. Mol. Catal. A : Chem, 287, pp.151~158 (2008)
- A. L. Linsebiger, , Chem. Rev, 95, pp.735~758 (1995)
- C. Y. W. Lin, , Prog. Org. Coat, 74, pp.645~647 (2012)
- D. Li, , Nano Lett, 4, pp.933~938 (2004)
- B. Lu, , J. Mater. Chem, 22, pp.1375~1379 (2012)